Electrofusion Products BerylliumBeryllium AcousticsAcoustic Domes and RibbonsTruextent SSX Diaphragm Beryllium X-ray Window AssembliesX-ray IF-1 X-ray IS-50M X-ray PF-60 X-ray PS-200 Vacuum - UHV AssembliesBeryllium Beam PipesCF Flange AssembliesCatalog CF Flange AssembliesCustom Engineered CF Flange AssembliesUHV Research Chambers Materion BrandsIF-1®IS-50M®PF-60®PS-200®SSX™Truextent® ServicesTechnologiesMarketsResource CenterAboutContact Us Is That Low Cost Beryllium Dome Or Cone Really Beryllium Analysis Of Suspicious Dome And Cone Additional Resources Electrofusion Home Resource Center Product Data & Related Literature Beryllium Beryllium Acoustic Material Technical Papers IS THAT LOW COST BERYLLIUM DOM... Is that Low-Cost Beryllium Dome or Cone Really Beryllium? Analysis of Suspicious Domes and Cones